Synthesis of polysubstituted pyrroles via [3 + 2]-annulation of aziridines and β-nitroalkenes under aerobic conditions
作者:Shaoyin Wang、Xiancui Zhu、Zhuo Chai、Shaowu Wang
DOI:10.1039/c3ob42324g
日期:——
Polysubstituted pyrroles were regioselectively synthesized in moderate to good yields via the copper acetate-catalyzed [3 + 2] annulation reaction of readily accessible aziridines and nitroalkenes. This reaction was proposed to proceed through a key azomethine ylide intermediate generated by selective C–C bond cleavage of the aziridine followed by annulation with nitroalkenes under aerobic conditions
Three-Component Synthesis of Polysubstituted Pyrroles from α-Diazoketones, Nitroalkenes, and Amines
作者:Deng Hong、Yuanxun Zhu、Yao Li、Xufeng Lin、Ping Lu、Yanguang Wang
DOI:10.1021/ol201891r
日期:2011.9.2
Polysubstituted pyrroles are regiospecifically synthesized via the copper-catalyzed three-component reaction of α-diazoketones, nitroalkenes, and amines under aerobic conditions. The cascade process involves an N–H insertion of carbene, a copper-catalyzed oxidative dehydrogenation of amine, and a [3 + 2] cycloaddition of azomethine ylide.